definition of arg

Reprint: Http://www.cppblog.com/guijie/archive/2010/12/13/136273.aspx Argument of the Maximum/minimum arg max F (x): When f (x) takes the maximum value, the value of X Arg min f (x): When f (x) takes the minimum value, the value of X Represents

This particular definition of *arg and *kwargs in a function is used to pass an indefinite number of arguments to a function. *arg (Only one *) is used to pass the list array, while **kwargs (two *) is used to pass the Dict dictionary def

In Python, these two are mutable parameters in Python, *arg represents any number of nameless arguments, and the type Tuple;**kwargs represents the keyword argument, which is dict.#* allows you to pass in 0 or any of these parameters, which are

http://misakamm.com/blog/209 The main function of a macro is to simplify code writing and to simplify some of the code that needs to be duplicated for more elegant looks. But it's not easy to use a macro, and it's easy to have disastrous

The main function of macros is to simplify code writing and to simplify some areas where repeated code is needed to get code that looks more elegant. However, it is not easy to use macros well. Poor macros can easily cause disastrous consequences.

Chr (), UNICHR () and Ord ()The CHR () function returns a corresponding character by using an integer (that is, 0~255) within range (256) as a parameter.UNICHR () is just like it, except that the Unicode character is returned, and the parameter

Http://www.yunweipai.com/archives/558.html The reason analysis of "Arg list too long" in Linux execution command error Tuna Hand Scroll was published 3 years ago in operation and maintenance experience in 2012-09-15 Recently, a problem has been

Reproduced to: http://hi.baidu.com/software_2008/blog/item/7d768731dde7ee11eac4af16.html System pre-defined error code SQL Server has 3831 predefined error codes, which are maintained in the master. dbo. sysmessages table. Each error code has a

In the process of learning C language, we may rarely write variable parameter function, the impression that the university teachers do not seem to have mentioned, but I found that the variable parameter function is very clever, so it is specifically

I. Function definition and BASIC application#!/usr/bin/env Python3‘‘‘#函数的定义, the most basic applicationDef myfirstfunction ():A = 1+2Print (a)Myfirstfunction () #函数的执行First = Myfirstfunction #函数可以指向一个对象First ()‘‘‘‘‘‘#函数的返回值 (return), we can